本文整理汇总了TypeScript中react-native.AsyncStorage.getAllKeys方法的典型用法代码示例。如果您正苦于以下问题：TypeScript AsyncStorage.getAllKeys方法的具体用法？TypeScript AsyncStorage.getAllKeys怎么用？TypeScript AsyncStorage.getAllKeys使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类react-native.AsyncStorage的用法示例。
在下文中一共展示了AsyncStorage.getAllKeys方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的TypeScript代码示例。
示例1: getAllKeys
/**
* Return all the keys in the cache.
* Will return an empty array if error happend.
* @return {Promise}
*/
async getAllKeys() {
try {
const keys = await AsyncStorage.getAllKeys();
const retKeys = [];
for (let i = 0; i < keys.length; i += 1) {
if (keys[i].indexOf(this.config.keyPrefix) === 0 && keys[i] !== this.cacheCurSizeKey) {
retKeys.push(keys[i].substring(this.config.keyPrefix.length));
}
}
return retKeys;
} catch (e) {
logger.warn(`getALlkeys failed! ${e}`);
return [];
}
}示例2: _findValidKeys
/**
* scan the storage and find out all the keys owned by this cache
* also clean the expired keys while scanning
* @private
* @return array of keys
*/
async _findValidKeys() {
const keys = [];
let keyInCache = [];
keyInCache = await AsyncStorage.getAllKeys();
for (let i = 0; i < keyInCache.length; i += 1) {
const key = keyInCache[i];
if (key.indexOf(this.config.keyPrefix) === 0 && key !== this.cacheCurSizeKey) {
if (await this._isExpired(key)) {
await this._removeItem(key);
} else {
keys.push(key);
}
}
}
return keys;
}示例3: clear
/**
* clear the entire cache
* The cache will abort output a warning:
* If error happened with AsyncStorage
* @return {Promise}
*/
async clear() {
logger.debug(`Clear Cache`);
try {
const keys = await AsyncStorage.getAllKeys();
const keysToRemove = [];
for (let i = 0; i < keys.length; i += 1) {
if (keys[i].indexOf(this.config.keyPrefix) === 0) {
keysToRemove.push(keys[i]);
}
}
// can be improved
for (let i = 0; i < keysToRemove.length; i += 1) {
await AsyncStorage.removeItem(keysToRemove[i]);
}
} catch (e) {
logger.warn(`clear failed! ${e}`);
}
}